Disk harrow



3 Sheets-Sheet 1. A. J. GLASS. DISK HARROW.

(No Model.)

Patented May113, 1890.

(No Model.)

3 Sheets-Sheet 3. A. J. GLASS. DISK HARROW.

No. 427,854. Patented May 13, 1890.

' Hforneys.

UNITED STATES PATENT ()FFICE.

ALBERT J. GLASS, OF BATAVIA, NEIV YORK, ASSIGNOR OF ONE-HALF TO SHELDONJ. GLASS, OF CHICAGO, ILLINOIS.

DISK HARROW.

SPECIFICATION forming part Of Letters Patent No. 427,854, dated May 13,1890. Application filed December 13,1889. Serial No. 333,647. (Nomodel.)

To all whom it may concern.-

Be it known that I, ALBERT J. GLASS, a citizen of the United States,residing at 13atavia, in the county of Genesee and State of New York,have invented new and useful Improvements in Disk Harrows, of which thefollowing is a specification.

This invention relates to that class of disk harrows in which thedisk-gangs are adj ustably connected with the main frame, and has forits objects to improve the devices whereby the gangs are pivoted to themain frame,

also the devices whereby the inner ends ofthe gangs are connectedtogether, and to provide simple means for shifting the gangs by thedraft of the horses.

My invent-ion consists of the improvements which will be hereinaftermore fully set forth, and pointed out; in the claims.

In the accompanying drawings, consisting of three sheets, Figure 1 is atop plan view of a harrow provided with my improvements. Fig. 2 is alongitudinal sectional elevation in line 00 0c, Fig.1. Fig.8 is asimilar view in line y y, Fig. 1. Fig. 4. is a cross-section in line :1000, Fig, 2, showing the draft-rod guides and draft-rods. Fig. 5 is afragmentary horizontal section of the central portion of the harrow andconnecting parts, the section being taken below the main frame andgangplanks. Fig. 6 is a fragmentary cross-section showing the means forconnecting the adjacent ends of the disk-gangs. Fig. 7 is a top planView of the harrow, showing the diskgangs arranged at an angle to theline of draft. Fig. Sis a longitudinal elevation of the front portion ofthe draft-rods and connecting parts, showing a modified construction ofthe stop device.

Like letters of reference refer to like parts in the several figures.

A represents the main frame, which consists of a draft-pole A, across-bar A and diagonal braces A I A represents a backwardly-inclinedseatsupport secured to the main frame.

B B represent the harroWdisks arrangedin two transverse gangs in rear ofthe crossbar A and mounted upon transverse shafts C O. The latter arejournaled, by means of cylindrical sleeves C, in bearings or hang ers C0 secured to the lower sides of the gang-planks D D. The shafts O areprovided at their inner ends with beveled heads d, seated in theinnermost sleeves O, and at their outer ends with screw-shanks, to whichscrew-nuts (1' are applied, which bear against the outermost disks, andwhereby the disks, except the innerlnost d sk of each gang, are clampedbetween the sleeves 3, while the innermost or two adjacent disks B B ofthe opposing gangs are secured to the ends of the innermost sleeves O.

F F represent the longitudinal rods by which the disk-gangs are movablyconnected with the main frame. These rods are bent or crank-shaped andjournaled with their horizontal front portions or pivots F, which arearranged longitudinally in openings formed in the upper portions ofvertical plates f f secured to the front and rear sides of the cross-barA The rods F extend obliquely downward from their pivots, and theirhorizontal rear ends are arranged between jaws f formed on the frontsides of the hangers near the lower ends thereof, and are attached tothe latter by vertical pivot-boltsf which pass through eyes f, formed onthe rear ends of the rods F F. The openings in these eyes are madeflaring upwardly and downwardly to permit of the requisite play of thepivot-bolts in the eyes, so as to permit the gangs to follow the surfaceof the ground, and to allow the angle of the gangs to be adjustedwithout causing the pivots to bind in the eye. The front ends of therods are provided with screw-nuts fiwhich bear against the front platesfof the crossbar A G G represent two inclined longitudinal braces orstay-bars, which also serve to connect the gang-planks with thecross-bar A and which are arranged over the pivot-rods F. Thesestay-bars are provided at their lower front ends with vertical eyes g,through which the horizontal front pivots of the rods F pass, and whichare arranged in rear of the rear plates f These eyes are prevented fromdrawing back on the pivots by pins g, which are inserted through thepivots in rear of the eyes. The stay-rods extend'upwardly from theseeyes, and are attached to the under sides of the gang-planks by verticalbolts 5 which also serve to hold the front flanges of the standards C tothe gang-planks. The fastening-bolt and the pivot boltj of each gang arearranged in a vertical line, so that these two points of connectionforman axial line or pivot for the gangs to swing upon in changing theangle of the gangs.

*II II represent draft-rods arranged below the cross-bar A anddraft-pole A, and whereby the inner portions of the disk-gangs areattached to the main frame. The rear ends of these rods are arrangedbetween jaws 71, on the front sides of the inner hangers C and areattached to the latter by vertical bolts 7t. The draft-rods 11 IIconverge forwardly and terminate in parallel front portions hfl'asrepresented in Fig. 5. These parallel portions are arranged in line withthe pole A, and are connected by transverse bolts 71. and sleeves 71?,which latter are arranged between the bars ll II, so as to leave a spaceor slot 7r between the same.

I represents a stirrup secured to the lower side of the draft-pole A andprovided with a rectangular opening, in which the parallel frontportions of the rods II 11 are supported and guided.

.T represents a vertical hand-lever pivoted in a mortise of thedraft-pole A and having its lower end arranged in the slot or space Itbetween the parallel front portions of the draft-rods. The hand-lever isdisconnected from the draft-rods, so that it is free to movelongitudinally with its lower end in the opening between the front stopand the guide I, while the draft-rods are equally free to movelongitudinally independently of the handlever. This permits thehand-lever to be set to the desired position for changing the angle ofthe gangs without moving the gangs, and allows the gangs to be shiftedby the draft of the horses. When it is desired to shift the innerportions of the disk-gangs backwardly, the upper end of the hand leveris swung forwardly, and the lever is locked in position by any suitabledevice. As shown in the drawings, a locking-segment j, secured to thetop of the pole A, is provided for this purpose. When the team is nowstarted, the outerportions of the gangs remain at rest until the frame Ahas been moved forward sufficient] y to cause the lower end of thehand-lever to strike against the front sleeves or steps 71, when theinner ends of the gangs will also move with the main frame. \Vhen it isdesired to shift the inner ends of the gangs forwardly, the team isbacked until the cross pin of the rear stop or sleeve 7L strikes againstthe stirrup I. The forward movement of the draftq'ods and of the innerends of the disk-gangs is limited by the rear bolt striking against thestirrup I, as shown in. Figs. L and 5. When the cross-pin so bearsagainst the stirrup or guide, the disks are arranged. in line, and canbe locked in this position by swinging the upper end of the hand-leverbackward until its lower end engages against the front stop or sleeve715, as shown in Fig. 2, and locking the lever .in this position. Thedisks are so locked both against forward and back ward movement.

In my improved harrow the disk-gangs are shifted by causing thedraft-animals to move forward or backward, and the driver is relievedfrom the necessity of drawing the gangs bodily forward or pressing thembackward by hand, whereby the operation of adjusting the gangs isrendered very easy and convenient. The hand-lever serves as a movablestop to limit the backward movement. of the disk-gangs. If desired,however, thehandlever may be omitted and the backward move ment of thedisk-gangs be limited by inserting a transverse pin in one of a seriesof openings 7.;, formed in the parallel portions of the draft-rods infront of the stirrup I, as represented in Fig. 8. This pin strikesagainst the front side of the stirrup as the main frame moves forwardlyand limits the back ward movement of the disk-gangs.

L represents a knuckle-bar arranged between the two innermost disks llJ3, and whereby the two gangs are connected. The knuckle-bar L consistsof a cylindrical shank ,1, provided at one end with a spheroidal knuckleZ, and of a sleeve which receives the shank Z and carries a spheroidalknuckle Z. The shank and sleeve are secured together by a pin Z. Theknuckles are seated in divided sockets formed in enlargements on. of theinnermost sleeves C and in caps M, bolted to the flanges oftheseenlargements. The knuckle-bar holds the inner ends of the diskgangsagainst lateral displacement both inwardly and outwardly and relievesthe con nectin g crank-rods and stayb ars from lateral strains. Theknuckle bar is disconnected from the draft-frame, and can therefore follow the undulating movement of the diskgangs freely, thereby enablingthe gangs to adapt themselves freely to the irregularities of theground.

In shifting the inner ends of the gangs backwardly from the positionrepresented in Fig. 1, in which the gangs are in line with each other,in order to set the gangs at an angle to the line of draft, asrepresented in Fig. 7, the gangs turn on the vertical pivots h. Thisrearward turning movement of the gangs would in the absence of thekuckle-bar increase the distance between the inner ends of the gan; butsuch a separation of the gangs rendered impossible by the knuckle-bar,which ties the gangs together. In order to enable the gangs to turn, andat the same time remain connected by the knuckle-bar, the pivots 71.must move inwardly or toward each other when the inner ends of the gangsare moved backwardly and outwardly or from each other when the innerends of the gangs are moved forwardly. This lateral movement of thepivots is provided for by the bent or crank form of the connecting-rodsF, which causes the rear ends of the rods to move laterally when thelongitudinal pivots at the front ends of the rods are turned in theirbearingsQ The innermost disks B are secured to the innermost sleeves bybolts 02, which pass also through the caps M and secure these disks andthe caps to the flanges of the sleeve enlargements. The knuckle-bar ispreferably made in two detachable section s, as described, so that thesections can be disconnected from each other for the purpose ofdisconnecting the gangs without removing the knuckles from theirsockets, thereby enabling the gangs to be packed closely for shipping.

I claim as my invention- 1. The combination, with the draft-frame andthe disk-gangs, of connecting-rods having their front ends connectedwith the draftframe by longitudinal pivots and their rear ends to thedisk-gangs by vertical pivots, and braces provided at their front endswith eyes, through which said longitudinal pivots pass and their rearends with vertical fasteningbolts arranged in line with said verticalpivots, substantially as set forth.

2. The combination, with the draft-frame and the disk-gangs, of bent orcranked connecting-rods provided at their front ends with longitudinalpivots journaled on the draft-frame and having their rear ends connectedwith the gangs, whereby the gangs are enabled to move laterally inadjusting their position, substantially as set forth.

The combination, with the draft-frame and the disk-gangs, of aconnecting device whereby the inner ends of the gangs are attached toeach other, and connecting-rods provided at their front ends withlongitudinal pivots journaled on the draft-frame and having at theirrear ends a connection with the gangs which is capable of movinglaterally as the position of the gangs is adjusted, substantially as setforth.

4. The combination, with the draft-frame and the disk-gangs, of aconnecting device whereby the inner ends of the gangs are attached toeach other, and bent or cranked connecting-rods provided at their frontends with longitudinal pivots journaled on the and the disk-gangspivoted thereto, of a free knuckle-bar disconnected from the draftframeand provided at its ends with spherical knuckles which are seated insockets in the disk-gangs, said sockets embracing the outer and innersides of each knuckle, whereby the knuckles are retained in the socketsand enabled to hold the gangs both against inward and outward thrusts,substantially as set forth.

6. The combination, with the disk-gangs provided in their inner endswith sockets, of a connecting knuckle-bar composed of ashank providedwith a knuckle, a sleeve also provided with a knuckle and receiving saidshank, and a fastening whereby the shank and sleeve are detachablysecured together, substantially as set forth.

7. The combination, with adraft-frame provided with a guide securedrigidly thereto and diskgangs pivoted to the draft-frame and capable ofangular adjustment, of draft-rods attached to the disk-gangs and capableof longitudinal movement on said guide, an adjust-- ing-lever mounted onthe draft-frame, and a stop secured to the draft-rods and adapted tocome in contact with said adjusting-lever, substantially as set forth.

8. The combination, with the draft-frame provided with a guide securedrigidly thereto and diskgan gs pivoted to the draft-frame and capable ofangular adjustment, of draft-rods attached to the disk-gangs and capableof longitudinal movement on said guide, a stop secured to the draft-rodsin rear of said guide, whereby the forward movement of the draftrods islimited, an adj usting -lever mounted on the draft-frame in front ofsaid guide, and a stop secured to the draft-rod in front of theadjusting-lever, whereby the rearward movement of the draft-rod islimited, substantially as set forth.

Witness my hand this 14th day of November, 1889.

ALBERT J. GLASS.

Witnesses:

GEORGE 0. VALZ, J 0s. J. GLASS.

